#include <iostream>
#include <cstring>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include "err.hpp"
using namespace std;

static void usage(std::string proc)
{
    std::cout << "Usage:\n\t" << proc << " serverip serverport\n"
              << std::endl;
}

int main(int argc, char *argv[])
{
    if (argc != 3)
    {
        usage(argv[0]);
        exit(USAGE_ERR);
    }

    string serverip = argv[1];
    uint16_t serverport = atoi(argv[2]);

    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock < 0)
    {
        cerr << "socket error : " << strerror(errno) << endl;
        exit(SOCKET_ERR);
    }

    struct sockaddr_in server;
    memset(&server, 0, sizeof(server));
    server.sin_family = AF_INET;
    server.sin_port = htons(serverport);
    inet_aton(serverip.c_str(), &(server.sin_addr));

    int cnt = 5;
    while (connect(sock, (struct sockaddr *)&server, sizeof(server)) != 0)
    {
        sleep(1);
        cout << "正在给你尝试重连,重连次数还有: " << cnt-- << endl;
        if (cnt <= 0)
            break;
    }

    if (cnt <= 0)
    {
        cerr << "连接失败..." << endl;
        exit(CONNECT_ERR);
    }

    char buffer[1024];
    while(true)
    {
        string line;
        cout<<"Enter>>:";
        getline(cin,line);


        write(sock,line.c_str(),line.size());

        ssize_t s = read(sock,buffer,sizeof(buffer)-1);
        if(s > 0)
        {
            buffer[s] = 0;
            cout << "server echo >>>" << buffer << endl;
        }
        else if(s == 0)
        {
            cerr << "server quit" << endl;
            break;
        }
        else {
            cerr << "read error: " << strerror(errno) << endl;
            break;
        }

    }
    close(sock);
    return 0;
}